The World of Warcraft Website announces the promised version 5.2 patch for World of Warcraft is now live on the Public Test Realm for the MMORPG. They offer a series of notes on the new version, though they warn that these are not final. Here's an overview: "By logging in you can help us test a massive new raid dungeon, a multi-faceted new quest hub, Pet Battle improvements, new world bosses, significant class balance changes, brand new pets and mounts, assorted bug fixes, and more." On a related note, VG247 notes a post on WoW Serbia pointing to a trailer showing "Defense of the Alehouse" to feature some sort of MOBA gameplay, which they suggest will also be part of this version 5.2 patch, though this is just speculation at this point.

I am not sure MOBA Battlegrounds would be a reason to come back to WoW. There are plenty of Dota/Moba style games out there that don't require the same amount of time sink and sub.

It might however be cool for the people that currently enjoy the game. Blizzard over all has habit of doing things like this before like having a chess game, plants vs zombies, and other little mini-games.

I am not exactly sure how they could handle the Moba progression if they allow max level characters and epic pve/pvp items. They would have to make the gear and characters you use separate from the main game. If not you might as well get rid of the death penalty and feeding.